fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph

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anand76 a9d168cfd7 Simplify migration to FileSystem API (#6552) ... Summary: The current Env/FileSystem API separation has a couple of issues - 1. It requires the user to specify 2 options - ```Options::env``` and ```Options::file_system``` - which means they have to make code changes to benefit from the new APIs. Furthermore, there is a risk of accessing the same APIs in two different ways, through Env in the old way and through FileSystem in the new way. The two may not always match, for example, if env is ```PosixEnv``` and FileSystem is a custom implementation. Any stray RocksDB calls to env will use the ```PosixEnv``` implementation rather than the file_system implementation. 2. There needs to be a simple way for the FileSystem developer to instantiate an Env for backward compatibility purposes. This PR solves the above issues and simplifies the migration in the following ways - 1. Embed a shared_ptr to the ```FileSystem``` in the ```Env```, and remove ```Options::file_system``` as a configurable option. This way, no code changes will be required in application code to benefit from the new API. The default Env constructor uses a ```LegacyFileSystemWrapper``` as the embedded ```FileSystem```. 1a. - This also makes it more robust by ensuring that even if RocksDB has some stray calls to Env APIs rather than FileSystem, they will go through the same object and thus there is no risk of getting out of sync. 2. Provide a ```NewCompositeEnv()``` API that can be used to construct a PosixEnv with a custom FileSystem implementation. This eliminates an indirection to call Env APIs, and relieves the FileSystem developer of the burden of having to implement wrappers for the Env APIs. 3. Add a couple of missing FileSystem APIs - ```SanitizeEnvOptions()``` and ```NewLogger()``` Tests: 1. New unit tests 2. make check and make asan_check Pull Request resolved: https://github.com/facebook/rocksdb/pull/6552 Reviewed By: riversand963 Differential Revision: D20592038 Pulled By: anand1976 fbshipit-source-id: c3801ad4153f96d21d5a3ae26c92ba454d1bf1f7		5 years ago
..
advisor	Rules Advisor: some fixes to support fetching stats from ODS (#4223)	6 years ago
block_cache_analyzer	fix MSVC build failures (#6517)	5 years ago
dump	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
rdb	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
CMakeLists.txt	cmake: add option WITH_CORE_TOOLS to exclude tools except ldb and sst_dump (#6506)	5 years ago
Dockerfile	adding docker build script and dockerfile	10 years ago
analyze_txn_stress_test.sh	Add copyright headers per FB open-source checkup tool. (#5199)	6 years ago
auto_sanity_test.sh	Add copyright headers per FB open-source checkup tool. (#5199)	6 years ago
benchmark.sh	Fixed typo in benchmark.sh (#6434)	5 years ago
benchmark_leveldb.sh	Add copyright headers per FB open-source checkup tool. (#5199)	6 years ago
blob_dump.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
check_all_python.py	Only search specific directories in Python check (#6225)	5 years ago
check_format_compatible.sh	Update HISTORY.md for forward compatibility (#6085)	5 years ago
db_bench.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
db_bench_tool.cc	Fix an error in db_bench with gcc 4.8 (#6537)	5 years ago
db_bench_tool_test.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
db_crashtest.py	Remove GetSortedWalFiles/GetCurrentWalFile from the crash test (#6491)	5 years ago
db_repl_stress.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
db_sanity_test.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
dbench_monitor	Fix /bin/bash shebangs	7 years ago
generate_random_db.sh	Add copyright headers per FB open-source checkup tool. (#5199)	6 years ago
ingest_external_sst.sh	Add copyright headers per FB open-source checkup tool. (#5199)	6 years ago
ldb.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
ldb_cmd.cc	Simplify migration to FileSystem API (#6552)	5 years ago
ldb_cmd_impl.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
ldb_cmd_test.cc	Simplify migration to FileSystem API (#6552)	5 years ago
ldb_test.py	Support custom env in sst_dump (#5845)	5 years ago
ldb_tool.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
pflag	Fix /bin/bash shebangs	7 years ago
reduce_levels_test.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
regression_test.sh	Add copyright headers per FB open-source checkup tool. (#5199)	6 years ago
report_lite_binary_size.sh	Add copyright headers per FB open-source checkup tool. (#5199)	6 years ago
rocksdb_dump_test.sh	Add copyright headers per FB open-source checkup tool. (#5199)	6 years ago
run_flash_bench.sh	Add copyright headers per FB open-source checkup tool. (#5199)	6 years ago
run_leveldb.sh	Add copyright headers per FB open-source checkup tool. (#5199)	6 years ago
sample-dump.dmp	First version of rocksdb_dump and rocksdb_undump.	10 years ago
sst_dump.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
sst_dump_test.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
sst_dump_tool.cc	Move BlobDB related files under db/ to db/blob/ (#6519)	5 years ago
sst_dump_tool_imp.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
trace_analyzer.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
trace_analyzer_test.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
trace_analyzer_tool.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
trace_analyzer_tool.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
verify_random_db.sh	Add copyright headers per FB open-source checkup tool. (#5199)	6 years ago
write_external_sst.sh	Add copyright headers per FB open-source checkup tool. (#5199)	6 years ago
write_stress.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
write_stress_runner.py	Fix interpreter lines for files with python2-only syntax.	5 years ago